ISO 226 : 2003(R2014)现行
ACOUSTICS - NORMAL EQUAL-LOUDNESS-LEVEL CONTOURS
出版：International Organization for Standardization
专家解读视频
Specifies combination of sound pressure levels and frequencies of pure continuous tones which are perceived as equally loud by human listeners.
NEN ISO 226 : 2003 - Identical
UNE 74003 : 1992 - Similar to
GOST R ISO 226 : 2009 - Identical
DIN ISO 226 : 2006 - Identical
DIN ISO 226 E : 2006 - Identical
UNE ISO 226 : 2013 - Identical
NFS 30 003 : 1965 - Identical
BS ISO 226 : 2003 - Identical
UNI ISO 226 : 2007 - Identical
NF ISO 226 : 2004 - Identical
DS ISO 226 : 2004 - Identical
NBN ISO 226 : 1992 - Identical
NS 4802 : 1973 - Similar to
BS 3383(1988) : 1988 - Identical
UNE ISO 226 : 2013 - Identical
BS ISO 226 : 2003 - Identical
DS ISO 226 : 2004 - Identical
NEN ISO 226 : 2003 - Identical
GOST R ISO 226 : 2009 - Identical
DIN ISO 226 : 2006 - Identical
NF ISO 226 : 2004 - Identical
DIN ISO 226 E : 2006 - Identical
